61346749 has 4 divisors (see below), whose sum is σ = 61440220. Its totient is φ = 61253280.

The previous prime is 61346743. The next prime is 61346827. The reversal of 61346749 is 94764316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51581124 + 9765625 = 7182^2 + 3125^2 .

It is a cyclic number.

It is not a de Polignac number, because 61346749 - 2¹⁷ = 61215677 is a prime.

It is a super-2 number, since 2×61346749² = 7526847225738002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61346743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45744 + ... + 47065.

It is an arithmetic number, because the mean of its divisors is an integer number (15360055).

Almost surely, 2^61346749 is an apocalyptic number.

It is an amenable number.

61346749 is a deficient number, since it is larger than the sum of its proper divisors (93471).

61346749 is an equidigital number, since it uses as much as digits as its factorization.

61346749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93470.

The product of its digits is 108864, while the sum is 40.

The square root of 61346749 is about 7832.4165491884. The cubic root of 61346749 is about 394.3941982210.

The spelling of 61346749 in words is "sixty-one million, three hundred forty-six thousand, seven hundred forty-nine".